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JasonW said:autopaint-1 said:Well how is it that Miami stations are not audible in Tampa? I have spent years listening to radio in Tampa in both cars and on all types of radio and yet Miami is really not audible there. I would venture to guess that those two Miami stations have an audience you could count on one hand at beat in that remote location. What's fasacinating is that WIOD day and night is directional south east. That must be a miracle station to cover that far north when they have a null in that direction. WQAM at 5 K day and it's low frequency my be heard slightly, although I doubt it during the day, but at night it's 1 K. As for Alaska, what can I say. It's not exactly comparable to NY, LA or Chicago either population wise of in the number of available radio sattions. Alaska is not an urban center by any means. Even it's cities have relatively small population figures compared to the continental US.
Because AM propagation (especially at the low end of the band) is largely by groundwave propagation, where the signal will go and how far is dependent on soil conductivity. Aiming and adjustment of AM directional arrays is as much art as science (the common term of it being a "black art" isn't far off the mark), and it is as much empirical as theoretical.
Many sparsely-populated states, especially those in the Midwest and West, are not so different from Alaska in this regard, where stations in the population centers also serve many smaller communities scattered throughout their states, sometimes by skywave propagation.
-- Jason
Somebody mentioned in an earlier post about the Europeans using a different band to broadcast digital and of course they were referring to Eureka 147 which broadcasts on the L band (1452-1492 MHz). Other countries are using 221 MHz and up for digital-only broadcasting.
It's too bad the FCC didn't give this idea a serious think instead of being sold on the notion of hybrid digital broadcasting on AM/FM as it is proving to be a disaster.
I'm sure HD Radio would be fine in digital-only mode (or at least no worse than the other digital schemes). But hybrid broadcasting is DOA.
The FCC appears to have forgotten the old adage, "If it seems too good to be true..."
Of course, on the plus side, this board would not be nearly as interesting.
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